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2011 and fuel conditioner

1964 Views 6 Replies 6 Participants Last post by  DENALI HD3500
I always used the amsoil diesel concentrate in my 2005 for obvious reasons but am curious if it is beneficial to use it in the 2011 I bought. Does anyone use it in their 2011's?
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I used Stanadyne performance formula in my 05 and it made a significant difference, esp. in smoothness and runability. In fact I used to swear by it. Since I have about 1/2 a gallon left over from that truck I have tried it in my LML, it does not seem to have the same pronounced effect. In fact I think the LML runs posssibly better without it. Owners manual does not condone additives and it downright forbids any that contain alcohol. That said, I might still use it when it gets real cold and mabie once in a while to help condition or help clean out the system, but I don't think it is a necessity like it was with my 05. Plus, it was costing me the equivalent of 15 cents a gallon more to use it!
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